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If x < − 3 and x^2 + 5x + 12 = 8, what is the value of x + 2?

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Math Expert
Joined: 02 Sep 2009
Posts: 53798
If x < − 3 and x^2 + 5x + 12 = 8, what is the value of x + 2?  [#permalink]

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07 Mar 2019, 00:12
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Difficulty:

25% (medium)

Question Stats:

80% (01:18) correct 20% (00:53) wrong based on 10 sessions

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If $$x < − 3$$ and $$x^2 + 5x + 12 = 8$$, what is the value of $$x + 2$$?

A. − 4

B. − 2

C. − 1

D. 0

E. 3

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Joined: 15 Dec 2018
Posts: 30
Re: If x < − 3 and x^2 + 5x + 12 = 8, what is the value of x + 2?  [#permalink]

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07 Mar 2019, 00:25
IMO B

Factoring the equation gives roots as -4 and -1

Since X<-3, the root is -4

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Re: If x < − 3 and x^2 + 5x + 12 = 8, what is the value of x + 2?  [#permalink]

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07 Mar 2019, 04:17
Bunuel wrote:
If $$x < − 3$$ and $$x^2 + 5x + 12 = 8$$, what is the value of $$x + 2$$?

A. − 4

B. − 2

C. − 1

D. 0

E. 3

solve
$$x^2 + 5x + 12 = 8$$
we get x= -4,-1
so $$x + 2$$
-2 ,-3
since x<-3
so IMO B
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Re: If x < − 3 and x^2 + 5x + 12 = 8, what is the value of x + 2?   [#permalink] 07 Mar 2019, 04:17
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